The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-051-0646, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Triumph Controls, Llc Dba Triumph Controls, Llc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-051-0646 |
| Primary Part Number | 19240-1 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Triumph Controls, Llc Dba Triumph Controls, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.615 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Thread Series | UNEF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Nut Height | 0.130 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 321 OVERALL |
| Bearing Surface Type | CHAMFERED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 19240-1 PRIMARY | Triumph Controls, Llc Dba Triumph Controls, Llc (USA) |
NSN 5310-01-051-0646 is a Nut,plain,hexagon, manufactured by Triumph Controls, Llc Dba Triumph Controls, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-051-0646 has 1 manufacturer part number on file: 19240-1 (Triumph Controls, Llc Dba Triumph Controls, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 1680-01-070-7554, 5305-01-163-0592. Verify interchangeability with system specifications before substitution.
Key specifications for 19240-1: Width Across Flats: 0.615 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Thread Series: UNEF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.500 INCHES IN. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.